• Design of a sonar for fish counting 

      Craig, Robert E.; Forbes, Sinclair T. (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)
      The paper described (a) A very high resolution echo-sounder, (b) A method of sorting echoes by amplitude and range, (c) A study of the analysis required to transform from distribution of echoes to distribution of ...
    • Report on herring acoustic surveys in the North Sea, Skagerrak and Kattegat during summer 1988 

      Kirkegaard, E.; Aglen, Asgeir; Bailey, R.S.; Forbes, Sinclair T.; Hagström, Olle (ICES CM Documents;1989/H:37, Working paper, 1989)
      Four herring acoustic surveys coordinated by ICES were carried out by Scottish, Norwegian, Swedish and Danish vessels during the period 24 June to 19 August 1988. The reports on the individual surveys, giving a short ...